A voice signal transmission system and method based on ultrasound

Abstract

An ultrasonic-based voice signal transmission system, the system comprising: an ultrasonic modulator (104), a beamforming controller (101), an ultrasonic transducer array (103), and a user detector (102); wherein, the ultrasonic modulator (104) is used to modulate the voice signal on the ultrasonic frequency band, and output the modulated voice signal to the beamforming controller (101); the user detector (102) is used to detect the user, and output the detection result for the user to a beamforming controller (101); the beamforming controller (101) is used to control the phase and amplitude of the modulated speech signal according to the detection result output by the user detector (102), to obtain an electrical signal directed to the user, and to point the The user's electrical signal is output to the ultrasonic transducer array (103); the ultrasonic transducer is used to convert the user-directed electrical signal output by the beamforming controller (101) into a beam-directed ultrasonic signal, and transmit the ultrasonic signal. The above solution can improve the convenience of the user's call.

Description

technical field [0001] The invention relates to the technical field of ultrasonic directional transmission, in particular to an ultrasonic-based voice signal transmission system and method. Background technique [0002] Existing communication devices such as mobile phones and computers need to communicate through earphones, or hand-held assistance, or loudspeaker (hands-free) playback. It brings a lot of inconvenience to the user during its use. For example, the user needs to wear an additional receiving device (such as a headset) to answer the call, which is troublesome. Another example is that when using a mobile phone, it is necessary to answer the call by holding it in the hand. After a long time, the user's hand will feel obvious discomfort, and the movement of the hand is also limited. For another example, there is a problem of poor privacy when answering a call in a hands-free (loudspeaker) manner. These defects all make the existing communication device inconvenie...

AI Technical Summary

Problems solved by technology

Another example is to use a mobile phone to answer calls by holding it in the hand. After a long time, the user's hand will feel obvious discomfort, and it also limits the movement of the hand.

For another example, there is a problem of poor privacy when answering a call in a hands-free (speaker) manner

These defects all cause existing communication device to be inconvenient to the user's use

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